Liquid-crystalline properties of 4-alkyl-, 4-alkyloxy and 4-halogene-4'-hydroxyazobenzene alkyloates

被引：10
作者：
Trzaska, J. [1 ]
Galewski, Z. [1 ]
机构：
[1] Univ Wroclaw, Fac Chem, PL-50383 Wroclaw, Poland
来源：
OPTO-ELECTRONICS REVIEW | 2009年 / 17卷 / 02期
关键词：
liquid crystals; smectics; azo; DSC calorimetry; polarizing microscopy; AZOBENZENES; SYSTEMS;
D O I：
10.2478/s11772-008-0071-7
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Twenty one esters, 4-alkyl-, 4-alkyloxy-, 4-nitro- and 4-halogene-4'-hydroxyazobenzne alkyloates have been synthesised. Basing on the DSC calorimetry and polarizing microscopy liquid- crystalline polymorphism was investigated. Five types of mesophases were identified: nematic, smectics A, C, F and unknown X (probably G).
引用
收藏
页码：129 / 139
页数：11
相关论文
共 21 条
  • [1] Bogojawlensky A, 1908, Z PHYS CHEM-STOCH VE, V64, P229
  • [2] SYNTHESIS AND SOME PHYSICAL-PROPERTIES OF UNSYMMETRICAL 4,4'-DIALKYLAZOXYBENZENES
    DABROWSKI, R
    KENIG, K
    RASZEWSKI, Z
    KEDZIERSKI, J
    SADOWSKA, K
    [J]. MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1980, 61 (1-2): : 61 - 78
  • [3] DABROWSKI R, 1980, POL J CHEM, V54, P1233
  • [4] DABROWSKI R, 1986, B POL ACAD SCI-CHEM, V34, P183
  • [5] de Jeu W. H., 1972, Philips Research Reports, V27, P172
  • [6] DEMUS D, 1980, TEXTURES LIQUID CRYS
  • [7] Liquid crystalline properties of 4-alkoxy-4'-chloroazobenzenes
    Galewski, Z
    [J]. MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1995, 265 : 77 - &
  • [8] Galewski Z, 1999, POL J CHEM, V73, P1357
  • [9] Galewski Z, 1999, POL J CHEM, V73, P1503
  • [10] GALEWSKI Z, 1995, P SOC PHOTO-OPT INS, V2372, P227, DOI 10.1117/12.215544
123